Zhennanguan Uprising

On 1 December 1907, the Zhennanguan Uprising took place at Zhennanguan, a pass on the Chinese-Vietnamese border. Sun Yat-sen sent Huang Mintang to monitor the pass, which was guarded by a fort. With the assistance of supporters among the fort's defenders, the revolutionaries captured the cannon tower in Zhennanguan. Sun Yat-sen, Huang Xing and Hu Hanmin personally went to the tower to command the battle. The Qing government sent troops led by Long Jiguang and Lu Rongting to counterattack, and the revolutionaries were forced to retreat into the mountainous areas. After the failure of this uprising, Sun was forced to move to Singapore due to anti-Sun sentiments within the revolutionary groups. He would not return to the mainland until after the Wuchang Uprising.